| 41. | Unless reclaimed, surface mining can leave behind large areas of infertile waste rock, as 70 % of material excavated is waste.
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| 42. | Small amounts of uranium were also produced by underground in-situ leaching and heap leaching of low grade ore and even waste rock.
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| 43. | At the same time the mining method is designed to ensure that no waste rock needs to be hauled to the surface.
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| 44. | Waste rock was used as fill for facility construction or hauled to a disposal area to the south of the Brewer Pit.
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| 45. | Several gallery entrances and heaps of waste rock are very still visible today ( see photo below of the Wildsch�nauer side ).
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| 46. | Waste rock from the Batu Hijau mine is disposed of in the rainforest, with space for newly produced waste rock running out.
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| 47. | Development mining is composed of excavation almost entirely in ( non-valuable ) waste rock in order to gain access to the orebody.
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| 48. | Waste rock from the Batu Hijau mine is disposed of in the rainforest, with space for newly produced waste rock running out.
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| 49. | The administration says that mining would leave far too much cyanide-treated waste rock on federal land at the mountain, near the Canadian border.
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| 50. | The huge waste rock dumps were either relocated or recontoured and covered with 80 cm of clay and 20 cm of top soil.
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